Currently, WLED driver supports only WLED4 peripherals that is present on pmi8998 and pm660L. This patch series converts the existing WLED4 bindings from .txt to .yaml format and adds the support for WLED5 peripheral that is present on PM8150L.
PM8150L WLED supports the following. - Two modulators and each sink can use any of the modulator - Multiple CABC selection options - Multiple brightness width selection (12 bits to 15 bits)
Changes from V1: - Rebased on top of the below commit. backlight: qcom-wled: Fix unsigned comparison to zero
Kiran Gunda (2): backlight: qcom-wled: convert the wled bindings to .yaml format backlight: qcom-wled: Add support for WLED5 peripheral in PM8150L
.../bindings/leds/backlight/qcom-wled.txt | 154 ------- .../bindings/leds/backlight/qcom-wled.yaml | 223 ++++++++++ drivers/video/backlight/qcom-wled.c | 459 ++++++++++++++++++--- 3 files changed, 634 insertions(+), 202 deletions(-) delete mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt create mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
Convert the qcom-wled bindings from .txt to .yaml format.
Signed-off-by: Kiran Gunda kgunda@codeaurora.org --- .../bindings/leds/backlight/qcom-wled.txt | 154 ----------------- .../bindings/leds/backlight/qcom-wled.yaml | 184 +++++++++++++++++++++ 2 files changed, 184 insertions(+), 154 deletions(-) delete mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt create mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt deleted file mode 100644 index c06863b..0000000 --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt +++ /dev/null @@ -1,154 +0,0 @@ -Binding for Qualcomm Technologies, Inc. WLED driver - -WLED (White Light Emitting Diode) driver is used for controlling display -backlight that is part of PMIC on Qualcomm Technologies, Inc. reference -platforms. The PMIC is connected to the host processor via SPMI bus. - -- compatible - Usage: required - Value type: <string> - Definition: should be one of: - "qcom,pm8941-wled" - "qcom,pmi8998-wled" - "qcom,pm660l-wled" - -- reg - Usage: required - Value type: <prop encoded array> - Definition: Base address of the WLED modules. - -- default-brightness - Usage: optional - Value type: <u32> - Definition: brightness value on boot, value from: 0-4095. - Default: 2048 - -- label - Usage: required - Value type: <string> - Definition: The name of the backlight device - -- qcom,cs-out - Usage: optional - Value type: <bool> - Definition: enable current sink output. - This property is supported only for PM8941. - -- qcom,cabc - Usage: optional - Value type: <bool> - Definition: enable content adaptive backlight control. - -- qcom,ext-gen - Usage: optional - Value type: <bool> - Definition: use externally generated modulator signal to dim. - This property is supported only for PM8941. - -- qcom,current-limit - Usage: optional - Value type: <u32> - Definition: mA; per-string current limit; value from 0 to 25 with - 1 mA step. Default 20 mA. - This property is supported only for pm8941. - -- qcom,current-limit-microamp - Usage: optional - Value type: <u32> - Definition: uA; per-string current limit; value from 0 to 30000 with - 2500 uA step. Default 25 mA. - -- qcom,current-boost-limit - Usage: optional - Value type: <u32> - Definition: mA; boost current limit. - For pm8941: one of: 105, 385, 525, 805, 980, 1260, 1400, - 1680. Default: 805 mA. - For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300, - 1500. Default: 970 mA. - -- qcom,switching-freq - Usage: optional - Value type: <u32> - Definition: kHz; switching frequency; one of: 600, 640, 685, 738, - 800, 872, 960, 1066, 1200, 1371, 1600, 1920, 2400, 3200, - 4800, 9600. - Default: for pm8941: 1600 kHz - for pmi8998: 800 kHz - -- qcom,ovp - Usage: optional - Value type: <u32> - Definition: V; Over-voltage protection limit; one of: - 27, 29, 32, 35. Default: 29V - This property is supported only for PM8941. - -- qcom,ovp-millivolt - Usage: optional - Value type: <u32> - Definition: mV; Over-voltage protection limit; - For pmi8998: one of 18100, 19600, 29600, 31100. - Default 29600 mV. - If this property is not specified for PM8941, it - falls back to "qcom,ovp" property. - -- qcom,num-strings - Usage: optional - Value type: <u32> - Definition: #; number of led strings attached; - value: For PM8941 from 1 to 3. Default: 2 - For PMI8998 from 1 to 4. - -- interrupts - Usage: optional - Value type: <prop encoded array> - Definition: Interrupts associated with WLED. This should be - "short" and "ovp" interrupts. Interrupts can be - specified as per the encoding listed under - Documentation/devicetree/bindings/spmi/ - qcom,spmi-pmic-arb.txt. - -- interrupt-names - Usage: optional - Value type: <string> - Definition: Interrupt names associated with the interrupts. - Must be "short" and "ovp". The short circuit detection - is not supported for PM8941. - -- qcom,enabled-strings - Usage: optional - Value tyoe: <u32 array> - Definition: Array of the WLED strings numbered from 0 to 3. Each - string of leds are operated individually. Specify the - list of strings used by the device. Any combination of - led strings can be used. - -- qcom,external-pfet - Usage: optional - Value type: <bool> - Definition: Specify if external PFET control for short circuit - protection is used. This property is supported only - for PMI8998. - -- qcom,auto-string-detection - Usage: optional - Value type: <bool> - Definition: Enables auto-detection of the WLED string configuration. - This feature is not supported for PM8941. - - -Example: - -pm8941-wled@d800 { - compatible = "qcom,pm8941-wled"; - reg = <0xd800>; - label = "backlight"; - - qcom,cs-out; - qcom,current-limit = <20>; - qcom,current-boost-limit = <805>; - qcom,switching-freq = <1600>; - qcom,ovp = <29>; - qcom,num-strings = <2>; - qcom,enabled-strings = <0 1>; -}; diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml new file mode 100644 index 0000000..d334f81 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml @@ -0,0 +1,184 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bindings/leds/backlight/qcom-wled.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding for Qualcomm Technologies, Inc. WLED driver + +maintainers: + - Lee Jones lee.jones@linaro.org + +description: | + WLED (White Light Emitting Diode) driver is used for controlling display + backlight that is part of PMIC on Qualcomm Technologies, Inc. reference + platforms. The PMIC is connected to the host processor via SPMI bus. + +properties: + compatible : + enum: + - qcom,pm8941-wled + - qcom,pmi8998-wled + - qcom,pm660l-wled + + reg: + maxItems: 1 + + default-brightness: + maxItems: 1 + description: + brightness value on boot, value from 0-4095. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + default: 2048 + + label: + maxItems: 1 + description: + The name of the backlight device. + allOf: + - $ref: /schemas/types.yaml#/definitions/string + + qcom,cs-out: + description: + enable current sink output. + This property is supported only for PM8941. + type: boolean + + qcom,cabc: + description: + enable content adaptive backlight control. + type: boolean + + qcom,ext-gen: + description: + use externally generated modulator signal to dim. + This property is supported only for PM8941. + type: boolean + + qcom,current-limit: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + mA; per-string current limit; value from 0 to 25 with + 1 mA step. This property is supported only for pm8941. + default: 20 + + qcom,current-limit-microamp: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + uA; per-string current limit; value from 0 to 30000 with + 2500 uA step. + default: 25 + + qcom,current-boost-limit: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + mA; boost current limit. + For pm8941 one of 105, 385, 525, 805, 980, 1260, 1400, 1680. + Default, 805 mA. + For pmi8998 one of 105, 280, 450, 620, 970, 1150, 1300, + 1500. Default 970 mA. + + qcom,switching-freq: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + kHz; switching frequency; one of 600, 640, 685, 738, + 800, 872, 960, 1066, 1200, 1371, 1600, 1920, 2400, 3200, + 4800, 9600. + Default for pm8941 1600 kHz + for pmi8998 800 kHz + + qcom,ovp: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + V; Over-voltage protection limit; one of 27, 29, 32, 35. Default 29V + This property is supported only for PM8941. + + qcom,ovp-millivolt: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + mV; Over-voltage protection limit; + For pmi8998 one of 18100, 19600, 29600, 31100. + Default 29600 mV. + If this property is not specified for PM8941, it + falls back to "qcom,ovp" property. + + qcom,num-strings: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + number of led strings attached; + value for PM8941 from 1 to 3. Default 2 + For PMI8998 from 1 to 4. + + interrupts: + maxItems: 2 + description: + Interrupts associated with WLED. This should be + "short" and "ovp" interrupts. Interrupts can be + specified as per the encoding listed under + Documentation/devicetree/bindings/spmi/ + qcom,spmi-pmic-arb.txt. + + interrupt-names: + description: + Interrupt names associated with the interrupts. + Must be "short" and "ovp". The short circuit detection + is not supported for PM8941. + + qcom,enabled-strings: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Array of the WLED strings numbered from 0 to 3. Each + string of leds are operated individually. Specify the + list of strings used by the device. Any combination of + led strings can be used. + + qcom,external-pfet: + description: + Specify if external PFET control for short circuit + protection is used. This property is supported only + for PMI8998. + type: boolean + + qcom,auto-string-detection: + description: + Enables auto-detection of the WLED string configuration. + This feature is not supported for PM8941. + type: boolean + +required: + - compatible + - reg + - label + +examples: + - | + pm8941-wled@d800 { + compatible = "qcom,pm8941-wled"; + reg = <0xd800 0x100>; + label = "backlight"; + + qcom,cs-out; + qcom,current-limit = <20>; + qcom,current-boost-limit = <805>; + qcom,switching-freq = <1600>; + qcom,ovp = <29>; + qcom,num-strings = <2>; + qcom,enabled-strings = <0 1>; + };
Add support for WLED5 peripheral that is present on PM8150L PMICs.
PM8150L WLED supports the following. - Two modulators and each sink can use any of the modulator - Multiple CABC selection options - Multiple brightness width selection (12 bits to 15 bits)
Signed-off-by: Kiran Gunda kgunda@codeaurora.org --- .../bindings/leds/backlight/qcom-wled.yaml | 39 ++ drivers/video/backlight/qcom-wled.c | 459 ++++++++++++++++++--- 2 files changed, 450 insertions(+), 48 deletions(-)
diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml index d334f81..e0dadc4 100644 --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml @@ -20,6 +20,7 @@ properties: - qcom,pm8941-wled - qcom,pmi8998-wled - qcom,pm660l-wled + - qcom,pm8150l-wled
reg: maxItems: 1 @@ -28,10 +29,23 @@ properties: maxItems: 1 description: brightness value on boot, value from 0-4095. + For pm8150l this value vary from 0-4095 or 0-32767 + depending on the brightness control mode. If CABC is + enabled 0-4095 range is used. allOf: - $ref: /schemas/types.yaml#/definitions/uint32 default: 2048
+ max-brightness: + maxItems: 1 + description: + Maximum brightness level. Allowed values are, + for pmi8998 it is 0-4095. + For pm8150l, this can be either 4095 or 32767. + If CABC is enabled, this is capped to 4095. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + label: maxItems: 1 description: @@ -124,6 +138,31 @@ properties: value for PM8941 from 1 to 3. Default 2 For PMI8998 from 1 to 4.
+ qcom,modulator-sel: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + Selects the modulator used for brightness modulation. + Allowed values are, + 0 - Modulator A + 1 - Modulator B + If not specified, then modulator A will be used by default. + This property is applicable only to WLED5 peripheral. + + qcom,cabc-sel: + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: + Selects the CABC pin signal used for brightness modulation. + Allowed values are, + 0 - CABC disabled + 1 - CABC 1 + 2 - CABC 2 + 3 - External signal (e.g. LPG) is used for dimming + This property is applicable only to WLED5 peripheral. + interrupts: maxItems: 2 description: diff --git a/drivers/video/backlight/qcom-wled.c b/drivers/video/backlight/qcom-wled.c index 3d276b3..8aa56ab 100644 --- a/drivers/video/backlight/qcom-wled.c +++ b/drivers/video/backlight/qcom-wled.c @@ -19,6 +19,8 @@ #define WLED_DEFAULT_BRIGHTNESS 2048 #define WLED_SOFT_START_DLY_US 10000 #define WLED3_SINK_REG_BRIGHT_MAX 0xFFF +#define WLED5_SINK_REG_BRIGHT_MAX_12B 0xFFF +#define WLED5_SINK_REG_BRIGHT_MAX_15B 0x7FFF
/* WLED3/WLED4 control registers */ #define WLED3_CTRL_REG_FAULT_STATUS 0x08 @@ -40,6 +42,7 @@
#define WLED3_CTRL_REG_OVP 0x4d #define WLED3_CTRL_REG_OVP_MASK GENMASK(1, 0) +#define WLED5_CTRL_REG_OVP_MASK GENMASK(3, 0)
#define WLED3_CTRL_REG_ILIMIT 0x4e #define WLED3_CTRL_REG_ILIMIT_MASK GENMASK(2, 0) @@ -101,6 +104,40 @@
#define WLED4_SINK_REG_BRIGHT(n) (0x57 + (n * 0x10))
+/* WLED5 specific sink registers */ +#define WLED5_SINK_REG_MOD_A_EN 0x50 +#define WLED5_SINK_REG_MOD_B_EN 0x60 +#define WLED5_SINK_REG_MOD_EN_MASK BIT(7) + +#define WLED5_SINK_REG_MOD_A_SRC_SEL 0x51 +#define WLED5_SINK_REG_MOD_B_SRC_SEL 0x61 +#define WLED5_SINK_REG_MOD_SRC_SEL_HIGH 0 +#define WLED5_SINK_REG_MOD_SRC_SEL_EXT 0x03 +#define WLED5_SINK_REG_MOD_SRC_SEL_MASK GENMASK(1, 0) + +#define WLED5_SINK_REG_MOD_A_BRIGHTNESS_WIDTH_SEL 0x52 +#define WLED5_SINK_REG_MOD_B_BRIGHTNESS_WIDTH_SEL 0x62 +#define WLED5_SINK_REG_BRIGHTNESS_WIDTH_12B 0 +#define WLED5_SINK_REG_BRIGHTNESS_WIDTH_15B 1 + +#define WLED5_SINK_REG_MOD_A_BRIGHTNESS_LSB 0x53 +#define WLED5_SINK_REG_MOD_A_BRIGHTNESS_MSB 0x54 +#define WLED5_SINK_REG_MOD_B_BRIGHTNESS_LSB 0x63 +#define WLED5_SINK_REG_MOD_B_BRIGHTNESS_MSB 0x64 + +#define WLED5_SINK_REG_MOD_SYNC_BIT 0x65 +#define WLED5_SINK_REG_SYNC_MOD_A_BIT BIT(0) +#define WLED5_SINK_REG_SYNC_MOD_B_BIT BIT(1) +#define WLED5_SINK_REG_SYNC_MASK GENMASK(1, 0) + +/* WLED5 specific per-'string' registers below */ +#define WLED5_SINK_REG_STR_FULL_SCALE_CURR(n) (0x72 + (n * 0x10)) + +#define WLED5_SINK_REG_STR_SRC_SEL(n) (0x73 + (n * 0x10)) +#define WLED5_SINK_REG_SRC_SEL_MOD_A 0 +#define WLED5_SINK_REG_SRC_SEL_MOD_B 1 +#define WLED5_SINK_REG_SRC_SEL_MASK GENMASK(1, 0) + struct wled_var_cfg { const u32 *values; u32 (*fn)(u32); @@ -125,9 +162,12 @@ struct wled_config { u32 num_strings; u32 string_i_limit; u32 enabled_strings[WLED_MAX_STRINGS]; + u32 mod_sel; + u32 cabc_sel; bool cs_out_en; bool ext_gen; bool cabc; + bool en_cabc; bool external_pfet; bool auto_detection_enabled; }; @@ -147,14 +187,39 @@ struct wled { u32 max_brightness; u32 short_count; u32 auto_detect_count; + u32 version; bool disabled_by_short; bool has_short_detect; + bool cabc_disabled; int short_irq; int ovp_irq;
struct wled_config cfg; struct delayed_work ovp_work; int (*wled_set_brightness)(struct wled *wled, u16 brightness); + int (*cabc_config)(struct wled *wled, bool enable); + int (*wled_sync_toggle)(struct wled *wled); +}; + +enum wled5_mod_sel { + MOD_A, + MOD_B, + MOD_MAX, +}; + +static const u8 wled5_brightness_reg[MOD_MAX] = { + [MOD_A] = WLED5_SINK_REG_MOD_A_BRIGHTNESS_LSB, + [MOD_B] = WLED5_SINK_REG_MOD_B_BRIGHTNESS_LSB, +}; + +static const u8 wled5_src_sel_reg[MOD_MAX] = { + [MOD_A] = WLED5_SINK_REG_MOD_A_SRC_SEL, + [MOD_B] = WLED5_SINK_REG_MOD_B_SRC_SEL, +}; + +static const u8 wled5_brt_wid_sel_reg[MOD_MAX] = { + [MOD_A] = WLED5_SINK_REG_MOD_A_BRIGHTNESS_WIDTH_SEL, + [MOD_B] = WLED5_SINK_REG_MOD_B_BRIGHTNESS_WIDTH_SEL, };
static int wled3_set_brightness(struct wled *wled, u16 brightness) @@ -175,6 +240,29 @@ static int wled3_set_brightness(struct wled *wled, u16 brightness) return 0; }
+static int wled5_set_brightness(struct wled *wled, u16 brightness) +{ + int rc, offset; + u16 low_limit = wled->max_brightness * 1 / 1000; + u8 v[2], brightness_msb_mask; + + /* WLED5's lower limit is 0.1% */ + if (brightness > 0 && brightness < low_limit) + brightness = low_limit; + + brightness_msb_mask = 0xf; + if (wled->max_brightness == WLED5_SINK_REG_BRIGHT_MAX_15B) + brightness_msb_mask = 0x7f; + + v[0] = brightness & 0xff; + v[1] = (brightness >> 8) & brightness_msb_mask; + + offset = wled5_brightness_reg[wled->cfg.mod_sel]; + rc = regmap_bulk_write(wled->regmap, wled->sink_addr + offset, + v, 2); + return rc; +} + static int wled4_set_brightness(struct wled *wled, u16 brightness) { int rc, i; @@ -237,7 +325,28 @@ static int wled_module_enable(struct wled *wled, int val) return 0; }
-static int wled_sync_toggle(struct wled *wled) +static int wled5_sync_toggle(struct wled *wled) +{ + int rc; + u8 val; + + val = (wled->cfg.mod_sel == MOD_A) ? WLED5_SINK_REG_SYNC_MOD_A_BIT : + WLED5_SINK_REG_SYNC_MOD_B_BIT; + rc = regmap_update_bits(wled->regmap, + wled->sink_addr + WLED5_SINK_REG_MOD_SYNC_BIT, + WLED5_SINK_REG_SYNC_MASK, val); + if (rc < 0) + return rc; + + val = 0; + rc = regmap_update_bits(wled->regmap, + wled->sink_addr + WLED5_SINK_REG_MOD_SYNC_BIT, + WLED5_SINK_REG_SYNC_MASK, val); + + return rc; +} + +static int wled3_sync_toggle(struct wled *wled) { int rc; unsigned int mask = GENMASK(wled->max_string_count - 1, 0); @@ -275,7 +384,7 @@ static int wled_update_status(struct backlight_device *bl) goto unlock_mutex; }
- rc = wled_sync_toggle(wled); + rc = wled->wled_sync_toggle(wled); if (rc < 0) { dev_err(wled->dev, "wled sync failed rc:%d\n", rc); goto unlock_mutex; @@ -298,6 +407,54 @@ static int wled_update_status(struct backlight_device *bl) return rc; }
+static int wled5_cabc_config(struct wled *wled, bool enable) +{ + int rc, offset; + u8 reg; + + if (wled->cabc_disabled) + return 0; + + reg = enable ? wled->cfg.cabc_sel : 0; + offset = wled5_src_sel_reg[wled->cfg.mod_sel]; + rc = regmap_update_bits(wled->regmap, wled->sink_addr + offset, + WLED5_SINK_REG_MOD_SRC_SEL_MASK, reg); + if (rc < 0) { + pr_err("Error in configuring CABC rc=%d\n", rc); + return rc; + } + + if (!wled->cfg.cabc_sel) + wled->cabc_disabled = true; + + return 0; +} + +static int wled4_cabc_config(struct wled *wled, bool enable) +{ + int i, j, rc; + u8 val; + + if (wled->cabc_disabled) + return 0; + + for (i = 0; i < wled->cfg.num_strings; i++) { + j = wled->cfg.enabled_strings[i]; + + val = enable ? WLED4_SINK_REG_STR_CABC_MASK : 0; + rc = regmap_update_bits(wled->regmap, wled->sink_addr + + WLED4_SINK_REG_STR_CABC(j), + WLED4_SINK_REG_STR_CABC_MASK, val); + if (rc < 0) + return rc; + } + + if (!wled->cfg.en_cabc) + wled->cabc_disabled = true; + + return 0; +} + #define WLED_SHORT_DLY_MS 20 #define WLED_SHORT_CNT_MAX 5 #define WLED_SHORT_RESET_CNT_DLY_US USEC_PER_SEC @@ -376,14 +533,9 @@ static void wled_auto_string_detection(struct wled *wled) }
if (wled->cfg.cabc) { - for (i = 0; i < wled->cfg.num_strings; i++) { - rc = regmap_update_bits(wled->regmap, wled->sink_addr + - WLED4_SINK_REG_STR_CABC(i), - WLED4_SINK_REG_STR_CABC_MASK, - 0); - if (rc < 0) - goto failed_detect; - } + rc = wled->cabc_config(wled, 0); + if (rc < 0) + goto failed_detect; }
/* Disable all sinks */ @@ -478,30 +630,30 @@ static void wled_auto_string_detection(struct wled *wled) }
/* Enable valid sinks */ - for (i = 0; i < wled->cfg.num_strings; i++) { - if (wled->cfg.cabc) { - rc = regmap_update_bits(wled->regmap, wled->sink_addr + - WLED4_SINK_REG_STR_CABC(i), - WLED4_SINK_REG_STR_CABC_MASK, - WLED4_SINK_REG_STR_CABC_MASK); - if (rc < 0) + if (wled->version == 4) { + for (i = 0; i < wled->cfg.num_strings; i++) { + if (sink_config & + BIT(WLED4_SINK_REG_CURR_SINK_SHFT + i)) + val = WLED4_SINK_REG_STR_MOD_MASK; + else + /* Disable modulator_en for unused sink */ + val = 0x0; + + rc = regmap_write(wled->regmap, wled->sink_addr + + WLED4_SINK_REG_STR_MOD_EN(i), val); + if (rc < 0) { + dev_err(wled->dev, "Failed to configure MODULATOR_EN rc=%d\n", + rc); goto failed_detect; - } - - if (sink_config & BIT(WLED4_SINK_REG_CURR_SINK_SHFT + i)) - val = WLED4_SINK_REG_STR_MOD_MASK; - else - val = 0x0; /* Disable modulator_en for unused sink */ - - rc = regmap_write(wled->regmap, wled->sink_addr + - WLED4_SINK_REG_STR_MOD_EN(i), val); - if (rc < 0) { - dev_err(wled->dev, "Failed to configure MODULATOR_EN rc=%d\n", - rc); - goto failed_detect; + } } }
+ /* Enable CABC if it needs to be enabled */ + rc = wled->cabc_config(wled, true); + if (rc < 0) + goto failed_detect; + /* Restore the feedback setting */ rc = regmap_write(wled->regmap, wled->ctrl_addr + WLED3_CTRL_REG_FEEDBACK_CONTROL, 0); @@ -811,17 +963,12 @@ static int wled4_setup(struct wled *wled) wled->cfg.string_i_limit); if (rc < 0) return rc; - - addr = wled->sink_addr + - WLED4_SINK_REG_STR_CABC(j); - rc = regmap_update_bits(wled->regmap, addr, - WLED4_SINK_REG_STR_CABC_MASK, - wled->cfg.cabc ? - WLED4_SINK_REG_STR_CABC_MASK : 0); - if (rc < 0) - return rc; }
+ rc = wled4_cabc_config(wled, wled->cfg.en_cabc); + if (rc < 0) + return rc; + rc = regmap_update_bits(wled->regmap, wled->ctrl_addr + WLED3_CTRL_REG_MOD_EN, WLED3_CTRL_REG_MOD_EN_MASK, @@ -835,7 +982,7 @@ static int wled4_setup(struct wled *wled) if (rc < 0) return rc;
- rc = wled_sync_toggle(wled); + rc = wled->wled_sync_toggle(wled); if (rc < 0) { dev_err(wled->dev, "Failed to toggle sync reg rc:%d\n", rc); return rc; @@ -857,6 +1004,115 @@ static const struct wled_config wled4_config_defaults = { .auto_detection_enabled = false, };
+static int wled5_setup(struct wled *wled) +{ + int rc, temp, i, j; + u8 sink_en = 0; + u16 addr; + u32 val; + + rc = regmap_update_bits(wled->regmap, + wled->ctrl_addr + WLED3_CTRL_REG_OVP, + WLED5_CTRL_REG_OVP_MASK, wled->cfg.ovp); + if (rc < 0) + return rc; + + rc = regmap_update_bits(wled->regmap, + wled->ctrl_addr + WLED3_CTRL_REG_ILIMIT, + WLED3_CTRL_REG_ILIMIT_MASK, + wled->cfg.boost_i_limit); + if (rc < 0) + return rc; + + rc = regmap_update_bits(wled->regmap, + wled->ctrl_addr + WLED3_CTRL_REG_FREQ, + WLED3_CTRL_REG_FREQ_MASK, + wled->cfg.switch_freq); + if (rc < 0) + return rc; + + /* Per sink/string configuration */ + for (i = 0; i < wled->cfg.num_strings; ++i) { + j = wled->cfg.enabled_strings[i]; + addr = wled->sink_addr + + WLED4_SINK_REG_STR_FULL_SCALE_CURR(j); + rc = regmap_update_bits(wled->regmap, addr, + WLED4_SINK_REG_STR_FULL_SCALE_CURR_MASK, + wled->cfg.string_i_limit); + if (rc < 0) + return rc; + + addr = wled->sink_addr + WLED5_SINK_REG_STR_SRC_SEL(j); + rc = regmap_update_bits(wled->regmap, addr, + WLED5_SINK_REG_SRC_SEL_MASK, + wled->cfg.mod_sel == MOD_A ? + WLED5_SINK_REG_SRC_SEL_MOD_A : + WLED5_SINK_REG_SRC_SEL_MOD_B); + + temp = j + WLED4_SINK_REG_CURR_SINK_SHFT; + sink_en |= 1 << temp; + } + + rc = wled5_cabc_config(wled, wled->cfg.cabc_sel ? true : false); + if (rc < 0) + return rc; + + /* Enable one of the modulators A or B based on mod_sel */ + addr = wled->sink_addr + WLED5_SINK_REG_MOD_A_EN; + val = (wled->cfg.mod_sel == MOD_A) ? WLED5_SINK_REG_MOD_EN_MASK : 0; + rc = regmap_update_bits(wled->regmap, addr, + WLED5_SINK_REG_MOD_EN_MASK, val); + if (rc < 0) + return rc; + + addr = wled->sink_addr + WLED5_SINK_REG_MOD_B_EN; + val = (wled->cfg.mod_sel == MOD_B) ? WLED5_SINK_REG_MOD_EN_MASK : 0; + rc = regmap_update_bits(wled->regmap, addr, + WLED5_SINK_REG_MOD_EN_MASK, val); + if (rc < 0) + return rc; + + addr = wled->sink_addr + wled5_brt_wid_sel_reg[wled->cfg.mod_sel]; + val = (wled->max_brightness == WLED5_SINK_REG_BRIGHT_MAX_15B) ? + WLED5_SINK_REG_BRIGHTNESS_WIDTH_15B : + WLED5_SINK_REG_BRIGHTNESS_WIDTH_12B; + rc = regmap_write(wled->regmap, addr, val); + if (rc < 0) + return rc; + + rc = regmap_update_bits(wled->regmap, + wled->sink_addr + WLED4_SINK_REG_CURR_SINK, + WLED4_SINK_REG_CURR_SINK_MASK, sink_en); + if (rc < 0) + return rc; + + /* This updates only FSC configuration in WLED5 */ + rc = wled->wled_sync_toggle(wled); + if (rc < 0) { + pr_err("Failed to toggle sync reg rc:%d\n", rc); + return rc; + } + + rc = wled_auto_detection_at_init(wled); + if (rc < 0) + return rc; + + return 0; +} + +static const struct wled_config wled5_config_defaults = { + .boost_i_limit = 5, + .string_i_limit = 12, + .ovp = 4, + .num_strings = 4, + .switch_freq = 11, + .mod_sel = 0, + .cabc_sel = 0, + .cabc = false, + .external_pfet = false, + .auto_detection_enabled = false, +}; + static const u32 wled3_boost_i_limit_values[] = { 105, 385, 525, 805, 980, 1260, 1400, 1680, }; @@ -875,6 +1131,16 @@ static const struct wled_var_cfg wled4_boost_i_limit_cfg = { .size = ARRAY_SIZE(wled4_boost_i_limit_values), };
+static inline u32 wled5_boost_i_limit_values_fn(u32 idx) +{ + return 525 + (idx * 175); +} + +static const struct wled_var_cfg wled5_boost_i_limit_cfg = { + .fn = wled5_boost_i_limit_values_fn, + .size = 8, +}; + static const u32 wled3_ovp_values[] = { 35, 32, 29, 27, }; @@ -893,6 +1159,21 @@ static const struct wled_var_cfg wled4_ovp_cfg = { .size = ARRAY_SIZE(wled4_ovp_values), };
+static inline u32 wled5_ovp_values_fn(u32 idx) +{ + /* + * 0000 - 38.5 V + * 0001 - 37 V .. + * 1111 - 16 V + */ + return 38500 - (idx * 1500); +} + +static const struct wled_var_cfg wled5_ovp_cfg = { + .fn = wled5_ovp_values_fn, + .size = 16, +}; + static u32 wled3_num_strings_values_fn(u32 idx) { return idx + 1; @@ -940,6 +1221,14 @@ static const struct wled_var_cfg wled4_string_cfg = { .size = 16, };
+static const struct wled_var_cfg wled5_mod_sel_cfg = { + .size = 2, +}; + +static const struct wled_var_cfg wled5_cabc_sel_cfg = { + .size = 4, +}; + static u32 wled_values(const struct wled_var_cfg *cfg, u32 idx) { if (idx >= cfg->size) @@ -951,7 +1240,7 @@ static u32 wled_values(const struct wled_var_cfg *cfg, u32 idx) return idx; }
-static int wled_configure(struct wled *wled, int version) +static int wled_configure(struct wled *wled) { struct wled_config *cfg = &wled->cfg; struct device *dev = wled->dev; @@ -1016,6 +1305,44 @@ static int wled_configure(struct wled *wled, int version) }, };
+ const struct wled_u32_opts wled5_opts[] = { + { + .name = "qcom,current-boost-limit", + .val_ptr = &cfg->boost_i_limit, + .cfg = &wled5_boost_i_limit_cfg, + }, + { + .name = "qcom,current-limit-microamp", + .val_ptr = &cfg->string_i_limit, + .cfg = &wled4_string_i_limit_cfg, + }, + { + .name = "qcom,ovp-millivolt", + .val_ptr = &cfg->ovp, + .cfg = &wled5_ovp_cfg, + }, + { + .name = "qcom,switching-freq", + .val_ptr = &cfg->switch_freq, + .cfg = &wled3_switch_freq_cfg, + }, + { + .name = "qcom,num-strings", + .val_ptr = &cfg->num_strings, + .cfg = &wled4_num_strings_cfg, + }, + { + .name = "qcom,modulator-sel", + .val_ptr = &cfg->mod_sel, + .cfg = &wled5_mod_sel_cfg, + }, + { + .name = "qcom,cabc-sel", + .val_ptr = &cfg->cabc_sel, + .cfg = &wled5_cabc_sel_cfg, + }, + }; + const struct wled_bool_opts bool_opts[] = { { "qcom,cs-out", &cfg->cs_out_en, }, { "qcom,ext-gen", &cfg->ext_gen, }, @@ -1035,12 +1362,13 @@ static int wled_configure(struct wled *wled, int version) if (rc) wled->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFn", dev->of_node);
- switch (version) { + switch (wled->version) { case 3: u32_opts = wled3_opts; size = ARRAY_SIZE(wled3_opts); *cfg = wled3_config_defaults; wled->wled_set_brightness = wled3_set_brightness; + wled->wled_sync_toggle = wled3_sync_toggle; wled->max_string_count = 3; wled->sink_addr = wled->ctrl_addr; break; @@ -1050,6 +1378,25 @@ static int wled_configure(struct wled *wled, int version) size = ARRAY_SIZE(wled4_opts); *cfg = wled4_config_defaults; wled->wled_set_brightness = wled4_set_brightness; + wled->wled_sync_toggle = wled3_sync_toggle; + wled->cabc_config = wled4_cabc_config; + wled->max_string_count = 4; + + prop_addr = of_get_address(dev->of_node, 1, NULL, NULL); + if (!prop_addr) { + dev_err(wled->dev, "invalid IO resources\n"); + return -EINVAL; + } + wled->sink_addr = be32_to_cpu(*prop_addr); + break; + + case 5: + u32_opts = wled5_opts; + size = ARRAY_SIZE(wled5_opts); + *cfg = wled5_config_defaults; + wled->wled_set_brightness = wled5_set_brightness; + wled->wled_sync_toggle = wled5_sync_toggle; + wled->cabc_config = wled5_cabc_config; wled->max_string_count = 4;
prop_addr = of_get_address(dev->of_node, 1, NULL, NULL); @@ -1186,7 +1533,6 @@ static int wled_probe(struct platform_device *pdev) struct backlight_device *bl; struct wled *wled; struct regmap *regmap; - int version; u32 val; int rc;
@@ -1203,18 +1549,22 @@ static int wled_probe(struct platform_device *pdev) wled->regmap = regmap; wled->dev = &pdev->dev;
- version = (uintptr_t)of_device_get_match_data(&pdev->dev); - if (!version) { + wled->version = (uintptr_t)of_device_get_match_data(&pdev->dev); + if (!wled->version) { dev_err(&pdev->dev, "Unknown device version\n"); return -ENODEV; }
mutex_init(&wled->lock); - rc = wled_configure(wled, version); + rc = wled_configure(wled); if (rc) return rc;
- switch (version) { + val = WLED5_SINK_REG_BRIGHT_MAX_12B; + of_property_read_u32(pdev->dev.of_node, "max-brightness", &val); + wled->max_brightness = val; + + switch (wled->version) { case 3: wled->cfg.auto_detection_enabled = false; rc = wled3_setup(wled); @@ -1233,6 +1583,18 @@ static int wled_probe(struct platform_device *pdev) } break;
+ case 5: + wled->has_short_detect = true; + if (wled->cfg.cabc_sel) + wled->max_brightness = WLED5_SINK_REG_BRIGHT_MAX_12B; + + rc = wled5_setup(wled); + if (rc) { + dev_err(&pdev->dev, "wled5_setup failed\n"); + return rc; + } + break; + default: dev_err(wled->dev, "Invalid WLED version\n"); break; @@ -1254,7 +1616,7 @@ static int wled_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.brightness = val; - props.max_brightness = WLED3_SINK_REG_BRIGHT_MAX; + props.max_brightness = wled->max_brightness; bl = devm_backlight_device_register(&pdev->dev, wled->name, &pdev->dev, wled, &wled_ops, &props); @@ -1277,6 +1639,7 @@ static const struct of_device_id wled_match_table[] = { { .compatible = "qcom,pm8941-wled", .data = (void *)3 }, { .compatible = "qcom,pmi8998-wled", .data = (void *)4 }, { .compatible = "qcom,pm660l-wled", .data = (void *)4 }, + { .compatible = "qcom,pm8150l-wled", .data = (void *)5 }, {} }; MODULE_DEVICE_TABLE(of, wled_match_table);
dri-devel@lists.freedesktop.org
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Kiran Gunda